NEW YORK (NBC) - NBC celebrates the nation's 237th birthday with a live broadcast of the "Macy's 4th of July Fireworks Spectacular," featuring all-star performances by Mariah Carey, Tim McGraw, Taylor Swift, Cher, Pitbull and Selena Gomez.

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Hosted by Nick Cannon of NBC's "America's Got Talent," the two-hour show will begin at 8:00pm on Channel 3 and also air an encore presentation of the second hour of the fireworks special airing at 10:00 p.m. ET.

The 37th annual "Macy's 4th of July Fireworks Spectacular" is the nation's largest patriotic pyrotechnic display with over 40,000 fireworks igniting the sky over the Hudson River.

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This year's show will also feature a first-ever, one-of-a-kind collaboration with global superstar Usher. For the first time in the history of the show, a superstar artist is collaborating with Macy's creative and pyrotechnic teams. Lending his artistic inspiration and talent, eight-time Grammy award-winning artist Usher is curating the overall design of the show, entitled "It Begins with a Spark." From the rousing musical selections to the spectacular fireworks in the sky, Usher is putting his visionary stamp on the nation's biggest Independence Day party.